88660422081 has 81 divisors (see below), whose sum is σ = 163875012483. Its totient is φ = 46021631040.

The previous prime is 88660422007. The next prime is 88660422119. The reversal of 88660422081 is 18022406688.

The square root of 88660422081 is 297759.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 71926412481 + 16734009600 = 268191^2 + 129360^2 .

It is not a de Polignac number, because 88660422081 - 2⁷ = 88660421953 is a prime.

It is a super-2 number, since 2×88660422081² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (88660422181) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 68781685 + ... + 68782973.

Almost surely, 2^88660422081 is an apocalyptic number.

88660422081 is the 297759-th square number.

88660422081 is the 148880-th centered octagonal number.

It is an amenable number.

88660422081 is a deficient number, since it is larger than the sum of its proper divisors (75214590402).

88660422081 is a wasteful number, since it uses less digits than its factorization.

88660422081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The spelling of 88660422081 in words is "eighty-eight billion, six hundred sixty million, four hundred twenty-two thousand, eighty-one".